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тАО07-22-2009 03:17 AM
тАО07-22-2009 03:17 AM
5412zl High CPU Usage
I hope you guys can give me some advice. Right now our main 5400 is having _really_ high CPU usage:
87 percent busy, from 1801 sec ago
1 sec ave: 99 percent busy
5 sec ave: 99 percent busy
1 min ave: 84 percent busy
I opened a case with HP Support and the adviced me about having LACP enabled with non-using LACP devices and trying to disable it where it was not being used.
Right now we can not change anything in the configuration because we are expecting a huge load of preinscription traffic next week.
I just want to know if it could or not be LACP related or maybe a vlan loop or something I'm missing.
We are not using spanning tree and it doesn't look like we have a loop (interface port utilization doesn't exceed 20%) and we are not even using it as a router, it's just switching.
Any ideas? I attached the show-tech all and running configuration.
FW version is K.13.25
Thank you in advance
PS: It's been like this since I know about and we had to reboot it once (with a firwmare update) but it didn't help. It held with average CPU around 12 and a couple minutes later it raised up again to 99
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тАО07-22-2009 03:24 AM
тАО07-22-2009 03:24 AM
Re: 5412zl High CPU Usage
as for me your network loop
please write this command on switch
(config)# spanning-tree and enter
after command entry watch cpu usage
and plese say me result
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тАО07-22-2009 03:38 AM
тАО07-22-2009 03:38 AM
Re: 5412zl High CPU Usage
right now I can't change anything. Enabling spanning tree would desynchronize our VMWare heartbeats and people around here would probably kill me.
I just took a 'show interface port-utilization' snapshot and the highest one it's around 18% and also the CPU oscillates. Sometimes it even reaches 20% but then it raises again.
I attach you the snapshot + the 'show tech all'
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тАО07-22-2009 03:46 AM
тАО07-22-2009 03:46 AM
Re: 5412zl High CPU Usage
please send me only sh tech print
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тАО07-22-2009 03:49 AM
тАО07-22-2009 03:49 AM
Re: 5412zl High CPU Usage
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тАО07-22-2009 04:07 AM
тАО07-22-2009 04:07 AM
Re: 5412zl High CPU Usage
please test enable spanning tree on switch after watch sh spanning tree commamd and send me sh spanning tree command print
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тАО07-22-2009 04:13 AM
тАО07-22-2009 04:13 AM
Re: 5412zl High CPU Usage
on 5400 series switch each module slot connect with 28.8Gbps(fullduplex)to main board (backplane)
if you want connect 10Gbps port on 5400 or 8200 switch you must have install on each module slot only two 10Gbps module
you have four 10 Gbps module
you must be each two module install different slot
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тАО07-22-2009 04:27 AM
тАО07-22-2009 04:27 AM
Re: 5412zl High CPU Usage
I will unplug them and then test if it is that.
Anyway, right now we are using just two 10GbE link so it wouldn't affect the backplane, right?
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тАО07-22-2009 04:37 AM
тАО07-22-2009 04:37 AM
Re: 5412zl High CPU Usage
you can't use full 10x4 gigabit bandwith usage on this slot
if you can use all bandwith on four 10 Gbps module on one slot at the time occur backplane problem
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тАО07-22-2009 05:07 AM
тАО07-22-2009 05:07 AM
Re: 5412zl High CPU Usage
We can't afford that right now, as soon as we are done with 'preinscription' season I'll try it
Thank you very much Cenk